Get Campaign Report: Opened

GET https://emailoctopus.com/api/1.6/campaigns/:campaignId/reports/opened

Get information on the contacts who opened the campaign.

Parameters
api_key (string)	Your API key.
limit (integer)	The number of records to return per page, up to a maximum of 100. Defaults to 100.

200 (success) returns

data (array of structs)

Details of each open:

contact (struct)

Details of the contact:

id (string)	The identifier of the contact.
email_address (string)	The email address of the contact.
fields (object)	An object containing key/value pairs of field values, using the field's tag as the key.
tags (array)	An array of tags associated with the contact.
status (string)	The status of the contact: `SUBSCRIBED`, `UNSUBSCRIBED` or `PENDING`.
deleted (boolean)	If the contact has since been deleted. If `true`, all other fields apart from `id` will be NULL.
created_at (string)	When the contact was created, in ISO 8601 format.
last_updated_at (string)	When the contact was last updated, in ISO 8601 format.

occurred_at (string) When the open occurred, in ISO 8601 format.

paging (struct/array)

If there is more data available, an object is returned in the following format:

next (string)

A link for the immediate next page of results.

If there is no more data to page, an empty array is returned.

Non-200 (error) returns

Details of the error:

code (string)	The error code.
message (string)	A description of the error.

Method-specific error codes
CAMPAIGN_NOT_FOUND	The campaign could not be found.
CAMPAIGN_NOT_SENT	The campaign does not have a status of 'SENT'.
CAMPAIGN_FEATURE_DISABLED	The campaign does not have open tracking enabled.

API-wide error codes
INVALID_PARAMETERS	Parameters are missing or invalid.
API_KEY_INVALID	Your API key is invalid.
UNAUTHORISED	You're not authorised to perform that action.
NOT_FOUND	The requested endpoint does not exist.
UNKNOWN	An unknown error has occurred.

Example request
/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened?api_key=00000000-0000-0000-0000-000000000000

Example response

Example response
{ "data": [ { "contact": { "id": "00000000-0000-0000-0000-000000000000", "email_address": "john.doe@example.com", "fields": { "FirstName": "John", "LastName": "Doe", "Birthday": "2000-12-20" }, "tags": ["vip"], "status": "SUBSCRIBED", "created_at": "2025\u002D07\u002D03T00\u003A00\u003A00\u002B00\u003A00", "last_updated_at": "2025\u002D07\u002D04T02\u003A31\u003A46\u002B00\u003A00" } , "occurred_at": "2025-07-03T02:31:46+00:00" }, { "contact": { "id": "00000000-0000-0000-0000-000000000001", "email_address": "jane.doe@example.com", "fields": { "FirstName": "Jane", "LastName": "Doe", "Birthday": "2000-12-20" }, "tags": ["vip"], "status": "SUBSCRIBED", "created_at": "2025\u002D07\u002D03T00\u003A00\u003A00\u002B00\u003A00" } , "occurred_at": "2025-07-03T02:31:46+00:00" } ], "paging": [] }

                        
                            {
                                "data": [
                                    {
                                        "contact":     {
    "id": "00000000-0000-0000-0000-000000000000",
    
    "email_address": "john.doe@example.com",
    
    "fields": {
        "FirstName": "John",
        "LastName": "Doe",
        "Birthday": "2000-12-20"
    },
    "tags": ["vip"],
    "status": "SUBSCRIBED",
    "created_at": "2025\u002D07\u002D03T00\u003A00\u003A00\u002B00\u003A00",
    "last_updated_at": "2025\u002D07\u002D04T02\u003A31\u003A46\u002B00\u003A00"
}
,
                                        "occurred_at": "2025-07-03T02:31:46+00:00"
                                    },
                                    {
                                        "contact":     
{
    "id": "00000000-0000-0000-0000-000000000001",
    
    "email_address": "jane.doe@example.com",
    
    "fields": {
        "FirstName": "Jane",
        "LastName": "Doe",
        "Birthday": "2000-12-20"
    },
    "tags": ["vip"],
    "status": "SUBSCRIBED",
    "created_at": "2025\u002D07\u002D03T00\u003A00\u003A00\u002B00\u003A00"
}
,
                                        "occurred_at": "2025-07-03T02:31:46+00:00"
                                    }
                                ],
                                "paging": []
                            }

Code sample copy
curl -X GET \ https://emailoctopus.com/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened?api_key=00000000-0000-0000-0000-000000000000
$ch = curl_init(); curl_setopt($ch, CURLOPT_URL, 'https://emailoctopus.com/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened?api_key=00000000-0000-0000-0000-000000000000'); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'GET'); $result = curl_exec($ch); if (curl_errno($ch)) { echo 'Error:' . curl_error($ch); } curl_close($ch);
import requests params = ( ('api_key', '00000000-0000-0000-0000-000000000000'), ) response = requests.get('https://emailoctopus.com/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened', params=params)
var https = require('https'); var options = { hostname: 'emailoctopus.com', port: 443, path: '/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened?api_key=00000000-0000-0000-0000-000000000000', method: 'GET', }; var req = https.request(options); req.end();
package main import ( "io/ioutil" "log" "net/http" ) func main() { client := &http.Client{} req, err := http.NewRequest("GET", "https://emailoctopus.com/api/1.6/campaigns/00000000-0000-0000-0000-000000000000/reports/opened?api_key=00000000-0000-0000-0000-000000000000", nil) if err != nil { log.Fatal(err) } resp, err := client.Do(req) if err != nil { log.Fatal(err) } bodyText, err := ioutil.ReadAll(resp.Body) if err != nil { log.Fatal(err) } }